Home / 9,139.90-13,710.56-2,900.28

Finding the Fourth Proportional to 9,139.90, 13,710.56 and 2,900.28

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Solution

The fourth proportional to 9,139.90, 13,710.56 and 2,900.28 is: 4,350.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,139.90 : 13,710.56 = 2,900.28 : x
  2. Step 2: Convert to fraction form
    9,139.90/13,710.56 = 2,900.28/x
  3. Step 3: Cross multiply
    9,139.90x = 13,710.56 × 2,900.28
  4. Step 4: Simplify right side
    9,139.90x = 39,764,462.96
  5. Step 5: Solve for x
    x = 39,764,462.96/9,139.90
  6. Step 6: Final answer
    x = 4,350.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.